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McCarthy sent two messages on Twitter: "Surgery went great. Now it's just the road to recovery." Earlier he posted: "Heading into surgery this morning. Want to thank everyone for (their) support and prayers during this time. It means a lot. Thank you."

The surgery was expected. McCarthy suffered the injury in last Saturday's preseason game against the Green Bay Packers, and initial tests indicated he needed surgery. The fourth-year pro had been scheduled to get a second opinion.

McCarthy, a captain in 2012, was a fourth-round pick of the Titans in 2011. He started 19 of 36 games in his first three seasons, including five starts last year when he replaced injured Moise Fokou. (McCarthy had lost the starting job to Fokou in training camp.) Injuries have been a problem during his career, however. He was working with the second- and third-team defense in training camp.

The Titans are expected to place McCarthy, who's in the final year of his contract, on Injured Reserve.